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Author Topic: MG90 servos - crap?  (Read 2574 times)

Steve W

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MG90 servos - crap?
« on: April 15, 2016, 07:21:33 PM »

I used to love these servos but I bought 8 last batch and 3 of them (of the 4 I've had on airframes so far) have failed within 6 months. WTF?

Bad batch?

In the meantime good old HXT90s that I've had since 2011 are still going strong.

Anyone else had these failing on them? I bought them from HobbyKing UK
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Gundummy

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Re: MG90 servos - crap?
« Reply #1 on: April 15, 2016, 07:33:04 PM »

I've had no issue with the ones i got, but then again they weren't from HK but GiantCod.
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Dizzy

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Re: MG90 servos - crap?
« Reply #2 on: April 05, 2018, 05:03:32 PM »

I used to love these servos but I bought 8 last batch and 3 of them (of the 4 I've had on airframes so far) have failed within 6 months. WTF?

Bad batch?

In the meantime good old HXT90s that I've had since 2011 are still going strong.

Anyone else had these failing on them? I bought them from HobbyKing UK
Steve are yours genuine I have had a few duff too but my old ones are still going strong

dizzy :-/
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Drone 5

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Re: MG90 servos - crap?
« Reply #3 on: April 05, 2018, 09:18:56 PM »

OHHHHHH. Good old GiantCod. That's going back.
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Steve W

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Re: MG90 servos - crap?
« Reply #4 on: April 05, 2018, 09:24:14 PM »

lol, don't think I even have these servos any more dizzy :)
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English Turbines

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Re: MG90 servos - crap?
« Reply #5 on: April 05, 2018, 09:26:36 PM »

 HXT 90s....Cheap nylon geared servo from HK....They seem to last forever......:)

                                                                                               :vulture:
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Steve W

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Re: MG90 servos - crap?
« Reply #6 on: April 05, 2018, 10:49:15 PM »

It's funny - when I first started I used to swear by the old HXT90's but was told they were cheap crap and I'd need metal geared ones - the only time I ever had an issue with the HXT90s was when using them in a tricopter, because they stripped on every hard landing - on planes though? Never once had an issue unless I crashed horribly. They worked well in planes like the Easystar, AXN, Bixler etc.
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English Turbines

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Re: MG90 servos - crap?
« Reply #7 on: April 06, 2018, 09:02:53 AM »

It's funny - when I first started I used to swear by the old HXT90's but was told they were cheap crap and I'd need metal geared ones - the only time I ever had an issue with the HXT90s was when using them in a tricopter, because they stripped on every hard landing - on planes though? Never once had an issue unless I crashed horribly. They worked well in planes like the Easystar, AXN, Bixler etc.

  Hi Steve,

                  I agree, a lot of folk banging on needlessly about how good metal geared servos are. The reality is, that these Chinese metal gears in these servos are made from Sintered metal, a form of powdered metal technology. Strong enough, but not a lot stronger than good old nylon or plastic TBH.
  If you are flying a plane, nylon gears are fine, loads from flying surfaces are low....Crashes are different, so are tail servos on Tricopters.
    My pet hate.?..Digital Servos. Whiny squeaky current gobblers...lol.

                                                                                                :vulture:


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Granpaw Jonah

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Re: MG90 servos - crap?
« Reply #8 on: April 06, 2018, 01:20:59 PM »

..Hey..
  Yeah... I've got ancient rtf stuff with nylon gears and they're ok still. I don't know why but recently when 'building' up new models I've found myself going for metal geared servos, but that's down partly to a similar experience Steve W talks of, ie ordering a bag of them to find several duds.... bah!..(but I am expecting them to perform better). Er, but not just with MG90's.. other nylon geared servos...
  Just been installing some 'MR RC' and some 'G-SUN' servos.... let's hope they are ok eh..
  G.J.
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